22501149 has 32 divisors (see below), whose sum is σ = 36495360. Its totient is φ = 12153600.

The previous prime is 22501139. The next prime is 22501151. The reversal of 22501149 is 94110522.

It is not a de Polignac number, because 22501149 - 2⁷ = 22501021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22501139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9604 + ... + 11714.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^22501149 is an apocalyptic number.

It is an amenable number.

22501149 is a deficient number, since it is larger than the sum of its proper divisors (13994211).

22501149 is a wasteful number, since it uses less digits than its factorization.

22501149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 22501149 is about 4743.5376039408. The cubic root of 22501149 is about 282.3156141398.

The spelling of 22501149 in words is "twenty-two million, five hundred one thousand, one hundred forty-nine".